remove useless actions from credentials checks

custom_components/deltadore-tydom/hub.py

@@ -100,7 +100,7 @@ async def get_tydom_credentials(
 
     async def test_credentials(self) -> None:
         """Validate credentials."""
-        connection = await self.connect()
+        connection = await self._tydom_client.async_connect()
         await connection.close()
 
     async def setup(self, connection: ClientWebSocketResponse) -> None: